Petaluma, CA has a Mediterranean climate with mild winters and warm summers. During the summer months, temperatures range from an average high of 75 degrees Fahrenheit to an average low of 55 degrees Fahrenheit. Rainfall is more common during the winter months, but the area still receives an average of 290 days of sunshine each year. Petaluma's climate makes it an ideal place for outdoor activities like hiking or fishing in nearby rivers and lakes.
Petaluma, California gets 30 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Petaluma averages 0 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 260 sunny days per year in Petaluma. The US average is 205 sunny days.
Petaluma gets some kind of precipitation, on average, 75 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 84 degrees
Winter Low: the January low is 39
Rain: averages 30 inches of rain a year
Snow: averages 0 inches of snow a year